I bought that rifle from a friend who bought it new at Walmart for 300$ and needed money.
I bought it to use on an elk hunting trip
where we were going to ride up and down the wet slick icy steep narrow elk trails in colorado. On day 2 I rolled a cow with it. She was behind and above a bush that ranged 482 yards from my position, so she was a good 500 yards. It shoots Nosler 150g Partitions to real close to moa out to 300yards anyway with 3-4" groups. that was with the factory plastic stock and a Pentax 4-16x50 scope.
It is in a Choate Ultimate Sniper stock and now wears a Nitrex TR2 2-10x50 with the etched EBX reticle and pop up target turrets. I lightened and smoothed the trigger but haven't shot it much because of the weather and when it has been decent I have been shooting my Savage LRH 6.5-284. It is a pretty decent gun for the money 300$ in the gun,200$ in the stock and 200$ in the scope for 700$ total.
I am going elk hunting this year again to the same place as before so I will be taking this rifle elk hunting again, I am hoping the Matrix bullets shoot in this gun.
Those are some very nice charts you have there! I will have to get out soon to try my luck as I just found a place where I can shoot over 400yards. Now I should be able to shoot out to a half mile or more.